Systems, compositions, and methods for corrosion inhibition
AssigneeThe Boeing Company
InventorsPatrick John Kinlen, Erik David Sapper, Eileen Olga Kutscha
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Abstract
Corrosion inhibition systems, including coated substrates, coating materials and corrosion inhibition compounds, and methods of making the same are disclosed. These systems and methods include corrosion inhibition compounds that are responsive to corrosion at a surface, releasing active inhibitor groups upon a corrosion stimulus. The active inhibitor groups are selected to block corrosion at the surface by inhibiting oxidation reactions, reduction reactions and/or by forming a passivation layer. Corrosion inhibition compounds may be linear polymers that include the inhibitor groups linked together with labile linkages that are disulfide or metal-sulfide bonds.
Claims20
A coated metallic substrate comprising:
- a corrosion inhibition coating material including:
- (i) a corrosion inhibition compound that is a linear polymer including at least four inhibitor groups, wherein the inhibitor groups are linked together with labile linkages, wherein each of the labile linkages independently is selected from the group consisting of a disulfide bond and a metal-sulfide bond, wherein each of the labile linkages is selected to dissociate in response to a corrosion stimulus to produce a dissociated inhibitor group having an active thiol group;
- and
- (ii) a carrier that includes at least one of a thermoset polymer, an epoxy, a resin, and a polyurethane, wherein the corrosion inhibition coating compound is dissolved within the carrier and
- a metallic substrate;
- wherein the corrosion inhibition coating material is cured onto the metallic substrate, and further wherein each dissociated inhibitor group is configured to adhere to the metallic substrate to form a passive layer on the metallic substrate.
Dependencies are inferred from the claim text.